Trigonometric Ratios: Sine, Cosine And Tangent Worksheet
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Trigonometric Ratios:
Worksheet:
Sine, Cosine and Tangent
This worksheet has questions about the trigonometric ratios sine, cosine and tangent.
These ratios are properties of the angles in a right-angled triangle which are related to the
length of its sides.
Model answers to
Trigonometric Ratios
this sheet
study guide
1.
In a right-angled triangle the trigonometric ratios are defined as:
length
of
side
opposite
to
the
angle
sine
of
an
angle
length
of
the
hypotenuse
length
of
side
adjacent
to
the
angle
cosine
of
an
angle
length
of
the
hypotenuse
length
of
side
opposite
to
the
angle
tangent
of
an
angle
length
of
side
adjacent
to
the
angle
Given this, decide which quantities, the sine, cosine or tangent of the angles
and
you can calculate in the following triangles. Calculate the appropriate ratios to 2
decimal places.
1.8cm
4.2mm
250m
4.1mm
50cm
3.2cm
210m
15cm
(i)
(ii)
(iii)
(iv)
in
2.
Use the inverse trigonometric functions to find the values of the angles
and
question 1.
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